package cn.js.common;

import lombok.Data;

import java.util.HashMap;
import java.util.Map;

@Data
public class R {
    private Boolean success; //返回的成功或者失败的标识符
    private Integer code; //返回的状态码
    private String message; //提示信息
    private Map<String, Object> data = new HashMap<String, Object>(); //数据

    //把构造方法私有
    private R() {
    }

    //成功的静态方法
    public static R ok() {
        R r = new R();
        r.setSuccess(true);
        r.setCode(ResultCode.SUCCESS);
        r.setMessage("成功");
        return r;
    }

    //失败的静态方法
    public static R error() {
        R r = new R();
        r.setSuccess(false);
        r.setCode(ResultCode.ERROR);
        r.setMessage("失败");
        return r;
    }

    //使用下面四个方法，方面以后使用链式编程
// R.ok().success(true)
// r.message("ok).data("item",list)
    public R success(Boolean success) {
        this.setSuccess(success);
        return this; //当前对象 R.success(true).message("操作成功").code().data()
    }

    public R message(String message) {
        this.setMessage(message);
        return this;
    }

    public R code(Integer code) {
        this.setCode(code);
        return this;
    }

    public R data(String key, Object value) {
        this.data.put(key, value);
        return this;
    }

    public R data(Map<String, Object> map) {
        this.setData(map);
        return this;
    }
}